The interior blower fan is not working when you turn it on

Welcome to 2CarPros.

It sounds like a bad connections in the wiring. If you turn it on while installed and move the wiring around to it, does it begin to work? Was the connector in good condition and none of the pins were pushed in? What I would recommend is to disconnect the connections at the fan motor and see if there is power to it. See if moving the wiring around to different positions cause power spikes or loss of power.

One other thing, if the blower motor only works on high, then suspect the blower motor resistor. I have included the blower motor wiring diagrams so you can see how the system works Let me know.

this guide can help us

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

If moving it does nothing, I need you to check for a good ground and power. I attached two pics below. Pic 1 is for manual climate control and pic 2 is for automatic. Check the pins shows (based on your system) for power and ground.

Here are a few links you may find helpful:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.

Your heater blower fuse may be in the underhood electrical center. But there should be a relay as well for it so check that by jus t replacing it with another. if it works then get a good realy and replace it. if not, then have the car checked for a bad switch or resistor. Here is a guide to help you check the fuses with the fuse location is the diagrams below.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (Below). Please let us know what you find.

Check for voltage and ground at the blower motor wiring, if good voltage and ground with no blower action, suspect the blower motor.

Checking applicable fuses is good. Also, check for voltage at the fuse.

Here are the locations and a guide to help you test

https://www.2carpros.com/articles/how-to-check-a-car-fuse

All fuses and relays are below with the wiring diagrams to help you test

Please run this test and get back to us.

Cheers

It sound's like you could have a bad blower motor or loose connection. On the passenger side under the dash remove the hush panel that cover's the a/c box. Then put the fan on high when the fan doesn't work try wiggling the connector around that goes to the blower motor see if the fan come's on.

If the filter get's restricted it will block the air flow of the fan but won't keep the motor from spinning.

Unfortunately, it sounds like the new blower motor has failed. If there is power to the motor and it doesn't work then the motor has failed. However, we are going to need to confirm where there is power on the motor and where there is not. There should be power on the purple wire when it is turned on and then there should be varying voltage on the black wire depending on the speed you have it set on. The brown wire is the ground wire.

Let us know what the voltage is on each wire and we can go from there. Thanks

Okay. Any chance they told you which wire this was? If there is 8 volts on the control wire and the blower still does not come on at all, the I suspect the blower motor is faulty. Let me know if they remember which wire this was and we can try to confirm the motor is the issue. Thanks

If you don't hear the blower come On-wire it direct from the battery-see below and check and test all the components within, 1-4 items. One of this is causing the problem

I would start with checking he fuses. Here is the fuse box information for the rear fuse box. Prodemand is not real specific on where it is, so you might have to look in your owner's manual for more specifics. I would check every HVAC related fuse.

The rear fuse block is under the left rear seat.